KR20150099643A - Display device and driving method thereof - Google Patents

Abstract

Provided is a display device which comprises: a signal processing unit for generating left-sight and right-sight image data inputted from an image signal; a frame rate conversion unit for generating a plurality of left-sight and right-sight image data to be corresponding to an output frequency from the image data; a data formatter for alternately arranging the left-sight and right-sight image data generated in the frame rate conversion unit; and a display unit for sequentially displaying the image data constituted by the data formatter.

Description

DISPLAY DEVICE AND DRIVING METHOD THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a driving method thereof, and more particularly to a display device and a driving method thereof capable of improving distortion of a 3D stereoscopic image.

The display device includes a plurality of pixels provided in an area defined by a black matrix or a pixel defining layer. A display device includes a liquid crystal display (LCD), an organic light emitting diode (OLED) display, and a plasma display panel (PDP) according to a light emission method.

A method for driving a display device includes a sequential driving method of receiving a data signal in accordance with a scan signal sequentially applied to a plurality of pixels and emitting a pixel in an order in which the data signal is received, Simultaneous Emission with Active Voltage, which simultaneously emits pixels. One frame period of the display device operating in the simultaneous light emission driving mode includes a non-light emitting period in which data is written and a light emitting period in which pixels emit light in accordance with the written data.

On the other hand, there is an increasing demand and interest for 3D stereoscopic images in recent years. Generally, 3D stereoscopic images are based on the stereo vision principle of the two eyes. The binocular parallax caused by the distance between the two eyes, which is about 65 mm apart, is an important factor that affects the stereoscopic effect. By combining two images, depth and real feeling of 3D stereoscopic images can be reproduced.

There are passive and active methods for displaying 3D stereoscopic images.

The passive method uses a polarizing filter to distinguish the left eye image from the right eye image. Or both blue and red sunglasses are seen in passive mode.

The active method is a method of dividing left and right eyes using a shutter glass and sequentially distinguishing the left eye image and the right eye image by sequentially covering the left eye (left eye) and the right eye (right eye). That is, the time-divided screen is periodically repeated and the glasses equipped with the electronic shutters synchronized with the period are repeatedly read and viewed. The time-split mode or the shuttered glass mode is also used.

When viewing the 3D stereoscopic image using the active method, when the left shutter of the shutter glass is opened, only the left eye image should be displayed, but a right eye image is displayed on a part of the screen, which is a problem in viewing a smooth 3D image. In this manner, a phenomenon in which image data other than the original image data is blended on the screen is referred to as crosstalk. In addition, a headache or tiredness may occur due to a time difference between a left eye image and a right eye image that are viewed by viewers, and this phenomenon is referred to as a flicker.

In the case of a display device operating in a simultaneous driving mode, since a light emitting period and a non-light emitting period are included in one frame, a cross talk phenomenon can be canceled to some extent in realizing a 3D stereoscopic image. However, the problem due to the flicker due to the time difference between the left eye image and the right eye image still remains.

In the present invention, in realizing a 3D stereoscopic image by using a display device having a simultaneous light emission driving method, a crosstalk generated in realizing 3D stereoscopic images by controlling a stereoscopic image data outputting order and a simultaneous emission timing of the display device, And to improve the flicker phenomenon.

A frame rate conversion unit for generating a plurality of left eye and right eye image data corresponding to an output frequency from the image data, a plurality of left and right eye image data generating units for generating left and right eye image data, A data formatter for alternately arranging left eye and right eye image data, and a display unit for sequentially displaying a plurality of image data constituted by the data formatter.

The display unit is driven by a simultaneous light emission driving method including a light emission period and a non-light emission period for one frame period.

The display apparatus may further include a timing control unit for controlling the emission timing of the light emission period of the display unit.

The timing controller may adjust a time period between a light emitting period for emitting light by the left eye image data and a light emitting period for emitting light by the right eye image data.

The timing control unit may further adjust the interval between the light emission period of the one stereoscopic image and the light emission period of the other stereoscopic image to be larger than the interval between the light emission periods of the left eye and right eye image data of one stereoscopic image.

The timing control unit can control the interval between the light emission periods of the image data recognized by each viewer to be larger than the interval between the light emission periods of the left eye and right eye image data recognized by one viewer.

The display device may further include shutter glasses that are opened and closed corresponding to left and right eye image data sequentially displayed on the display unit.

The shutter glasses may include a mode selection unit capable of selecting a 3D mode, a 2D mode, a single mode, a dual mode, and a quad mode.

A second step of generating left eye and right eye image data using the received image signal, a third step of generating a plurality of left eye and right eye image data corresponding to an output frequency from the image data, A fourth step of arranging the plurality of left eye and right eye image data alternately in an output format, and a fifth step of sequentially displaying the image data composed of the output format on the display unit do.

The fifth step may include adjusting a time period between a light emitting period for emitting light by the left eye image data and a light emitting period for emitting light by the right eye image data.

The fifth step includes adjusting the interval between the light emission period of the one stereoscopic image and the light emission period of the other stereoscopic image to be larger than the interval between the light emission periods of the left eye and right eye image data of one stereoscopic image can do.

The fifth step may include adjusting the interval between the emission periods of the image data recognized by each viewer to be larger than the interval between the emission periods of the left and right eye image data recognized by one viewer.

The display device according to the present invention can improve the crosstalk and flicker phenomenon that may occur in realizing the stereoscopic image by controlling the order of outputting the stereoscopic image data and the simultaneous emission timing of the display device.

1 is a block diagram schematically illustrating a stereoscopic image display apparatus according to an exemplary embodiment of the present invention.
2 is a timing diagram illustrating a method of configuring 3D image data in a single viewer 3D mode according to the related art.
3 is a timing diagram illustrating a method of configuring 3D image data in a single viewer 3D mode according to an embodiment of the present invention.
4 is a timing diagram illustrating a method of configuring 3D image data in a single viewer 3D mode according to another embodiment of the present invention.
5 is a timing diagram illustrating a method of configuring 3D image data in a dual viewer 3D mode according to the prior art.
6 is a timing diagram illustrating a method of configuring 3D image data in a dual viewer 3D mode according to an embodiment of the present invention.
7 is a timing diagram illustrating a method of configuring 3D image data in a single viewer 3D mode according to another embodiment of the present invention.
8 is a timing diagram illustrating a method of configuring image data in the quad viewer 2D mode according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with certain embodiments, it is obvious to those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood, however, that the scope of the present invention is not limited to the specific embodiments described above, and all changes, equivalents, or alternatives included in the spirit and technical scope of the present invention are included in the scope of the present invention.

In this specification, when a part is connected to another part, it includes not only a direct connection but also a case where the part is electrically connected with another part in between. In addition, when a part includes an element, it does not exclude other elements unless specifically stated otherwise, but may include other elements.

The terms first, second, third, etc. in this specification may be used to describe various components, but such components are not limited by these terms. The terms are used for the purpose of distinguishing one element from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second or third component, and similarly, the second or third component may be alternately named.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a block diagram schematically illustrating a stereoscopic image display apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a stereoscopic image display apparatus 100 according to an exemplary embodiment of the present invention includes a signal processing unit 200, a controller 300, a display unit 400, and a shutter glasses 500.

The signal processing unit 200 is responsible for general data processing on input image data. The signal processing unit 200 may be, for example, a digital television receiver for processing a digital broadcast signal. Typical data processing includes tuning a channel through which a digital broadcast signal including video data is transmitted, receiving a digital broadcast signal through a tuned channel, demodulating and decoding the received digital broadcast signal, Demultiplexing and decoding a video data from a demultiplexed digital broadcasting signal are collectively referred to as a data processing procedure.

After the general data processing of the 3D image data, the signal processing unit 200 processes the 3D image data into left eye image data and right eye image data and outputs the processed data.

The signal processing unit 200 receives and processes 2D image data as well as 3D image data. Accordingly, when 2D image data other than 3D image data is input to the signal processing unit 200, the inputted 2D image data can be processed by bypassing only the data formatter 330 to be described later.

The controller 300 includes a timing controller 310, a frame rate controller 320, a data formatter 330, and a shutter glasses controller 340.

The timing control unit 310 controls the driving timing of each driving unit of the display unit 400, which will be described later, based on a synchronous signal and a clock signal input from the outside. The synchronizing signal may be classified into a vertical synchronizing signal (Vsync) for separating consecutive frames and a horizontal synchronizing signal (Hsync) for setting a driving activating timing for each pixel. The timing controller 310 generates the data driving control signal CONT1 and the scan driving control signal CONT2 in response to the synchronization signal. In addition, a shutter glasses control signal CONT3 for controlling the opening and closing of the shutter glasses 500 to be described later is generated.

In addition, the timing controller 310 determines the time at which the light emitting period and the non-light emitting period are located within one frame period.

The frame rate control unit 320 processes the frequency of the image data output from the signal processing unit 200 to correspond to the output frequency of the display unit 400. [ For example, if the frequency of the video data input from the signal processing unit 200 is 60 Hz and the output frequency of the display unit 400 is 120 Hz or 240 Hz, the frame rate control unit 320 sets the frequency (60 Hz) It is processed in a predefined manner to correspond to the output frequency of 120Hz or 240Hz. Here, the predefined method is a method of temporal interpolation of an input video signal and a simple repetition of a frame of an input video signal.

The temporal interpolation method is a method of processing input image data of 60 Hz to quadruple (0, 0.25, 0.5, 0.75) so as to be image data of 240 Hz. A method of simply repeating a frame of an inputted video signal is a method of processing each frame of input video data of 60 Hz four times so that the frequency of each frame becomes 240 Hz.

The data formatter 330 arranges the image data processed to correspond to the output frequency of the display unit 400 through the frame rate controller 320 by arranging the image data according to the viewer mode according to the 2D / 3D mode and the number of viewers And outputs the composed image data to the display unit 400.

The shutter glasses control unit 340 adjusts the opening and closing of the shutter glasses 500 so that the 3D image data formed in the data formatter 330 is displayed on the display unit 400 and can be viewed using the shutter glasses 500. [ That is, the shutter glasses control unit 340 controls the shutter glasses 500 so that the shutter glasses 500 can operate in synchronization with the output order of the image data configured in the data formatter 330 and the output timing of the image data displayed in the display unit 400 (500).

The shutter glasses 500 can be opened or closed by separating the entire binocular shutter or the left and right shutters by the shutter glasses control unit 340. [ That is, the entirety of the both-side shutters can be simultaneously opened or closed, or the left-eye and right-eye shutters can be alternately opened and closed.

In addition, the shutter glasses 500 are provided with mode selection units 501 and 502. The shutter glasses 500 can transmit, for example, a 3-bit signal using the mode selection units 501 and 502. The shutter glasses 500 can select a single viewer 3D mode, a dual viewer 3D mode, and a quad viewer 2D mode, which will be described later, by using the mode selection units 501 and 502 .

The display unit 400 includes a display substrate 410 including a plurality of pixels PX arranged in a row direction and a column direction, a scan driver 410 for applying a scan signal to each pixel PX 420, and a data driver 430 for applying a data signal to each pixel PX.

The display unit 400 according to an exemplary embodiment of the present invention operates in a simultaneous emission mode with an active voltage. The simultaneous light emission driving method is a method in which a plurality of pixels simultaneously emit light to a frame so that images of one frame displayed on the display device are simultaneously displayed.

Therefore, one frame period of the display section 400 that operates in the simultaneous light emission driving mode includes a non-emission period in which data is written and a light emission period in which pixels emit light in accordance with the written data. At this time, the non-emission period may be half or less of one frame period. Likewise, the light emission period can be half or less of one frame period.

The scan driver 420 receives a scan driving control signal CONT2 from the controller 300 and generates a plurality of scan signals. The scan driver 420 sequentially supplies a plurality of scan signals to the plurality of scan lines S1 to Sn.

The data driver 430 receives the data driving control signal CONT1 from the controller 300 and outputs a plurality of data signals DATA corresponding to the processed image data to the data formatter 330, .

2 is a timing diagram illustrating a method of configuring 3D image data in a single viewer 3D mode according to the related art. 2 is a diagram illustrating a state in which 3D image data configured in the single viewer 3D mode in the data formatter 330 is displayed in each frame of the display unit 400 having the simultaneous light emission driving method. In FIG. 2, the x-axis represents time and the y-axis represents the vertical position of the display unit 400. The display unit 400 has an output frequency of 240 Hz and is driven by a simultaneous light emission driving method. Therefore, the light emission period and the non-light emission period are included in one frame period (4.15 ms).

In order to realize a single viewer 3D stereoscopic image, the data formatter 330 constructs 3D image data by alternately arranging the left eye image data L1, L2 ... and the right eye image data R1, R2 ..., To the display unit (400). The 3D image data is sequentially displayed on the display unit 400 having an output frequency of 240 Hz and the shutter glasses 500 are operated with a left and right shutter opening and closing cycle of 240 Hz equal to the output frequency of the display unit 400.

For example, the 3D image data is arranged in the same arrangement as (L1-R1-L2-R2), sequentially displayed on the display unit 400 having an output frequency of 240 Hz, It operates with the shutter opening / closing cycle to realize a single viewer 3D stereoscopic image.

However, since it is difficult for the shutter glasses 500 to operate with a shutter opening / closing cycle as fast as 240 Hz, problems such as crosstalk and luminance decrease arise. Therefore, in order to minimize problems such as crosstalk and luminance degradation in the conventional single viewer 3D mode, the shutter glasses 500 have a shutter open period (120 Hz) with a frequency relatively lower than the output frequency (240 Hz) of the display unit 400, The 3D image data is constructed so that it can operate with the 3D image data.

That is, in the conventional single viewer 3D mode, the data formatter 330 alternately arranges the left eye image data (L1, L2 ...) and the right eye image data (R1, R2 ...) And outputs the configured 3D image data to the display unit 400. The 3D image data is sequentially displayed on the display unit 400 having an output frequency of 240 Hz and the shutter glasses 500 operate with 120 Hz left and right shutter opening and closing cycles shorter than the output frequency of the display unit 400.

For example, the 3D image data is arranged in the same arrangement as (L1-L1-R1-R1-L2-L2-R2-R2) and sequentially displayed on the display unit 400 having an output frequency of 240 Hz, (500) operates with 120 Hz left and right shutter opening / closing cycles to implement a single viewer 3D stereoscopic image.

That is, the shutter glasses 500 having a shutter open period (120 Hz) smaller than the output frequency (240 Hz) of the display unit 400 by repeating the same image data in successive frames as in the case of (L1-L1) ), The 3D image data can be viewed. As a result, problems such as crosstalk and luminance drop can be solved.

However, since the 3D stereoscopic image is operated at 120 Hz, it does not take advantage of the driving of the display unit driven at 240 Hz, and operates in a structure vulnerable to flicker and depth distortion in 3D stereoscopic image realization .

That is, since the time from when the left eye image data L1 is stored to when the right eye image data R1 is newly input is 8.3 ms, the display unit 400 operates at 240 Hz, but in the 3D mode, .

Accordingly, the present invention provides a data driving method capable of solving the problems such as crosstalk and luminance drop, and reducing the occurrence of flicker and depth distortion.

3 is a timing diagram illustrating a method of configuring 3D image data in a single viewer 3D mode according to an embodiment of the present invention. 3 is a diagram illustrating a state in which 3D image data configured in the data formatter 330 is displayed in each frame of the display unit 400 having the simultaneous light emission driving method. In FIG. 3, the x-axis represents time and the y-axis represents the vertical position of the display unit 400. The display unit 400 has an output frequency of 240 Hz and is driven by a simultaneous light emission driving method. Therefore, the light emission period and the non-light emission period are included in one frame period (4.15 ms).

In the single viewer 3D mode according to an embodiment of the present invention, the data formatter 330 alternately arranges the left eye image data L1, L2 ... and the right eye image data R1, R2 ..., L1) and one set of right eye image data (R1-R1) successively to construct 3D image data, and outputs the constructed 3D image data to the display unit 400. FIG. The 3D image data is sequentially displayed on the display unit 400 having an output frequency of 240 Hz and the shutter glasses 500 operate with 240 Hz left and right shutter opening and closing cycles equal to the output frequency of the display unit 400.

For example, the 3D image data is configured to have the same arrangement as (L1-R1-L1-R1-L2-R2-L2-R2) and is sequentially displayed on the display unit 400 having an output frequency of 240 Hz, The shutter glasses 500 operate with 240 Hz left and right shutter opening / closing cycles to implement a single viewer 3D stereoscopic image according to an embodiment of the present invention.

In the case of the conventional single viewer 3D image data arrangement (L1-L1-R1-R1-R1-L2-L2-R2-R2), the time between the left eye image data L1 and the right eye image data R1 is 8.3 ms. The time between the left eye image data L1 and the right eye image data R1 is 4.15 ms in the case of the 3D image data arrangement (L1-R1-L1-R1-L2-R2-L2-R2) The flicker phenomenon can be prevented from occurring.

In addition, by repeating the same image data in successive frames as in (L1-R1) and (L1-R1), problems such as crosstalk and luminance drop can be solved.

4 is a timing diagram illustrating a method of configuring 3D image data in a single viewer 3D mode according to another embodiment of the present invention. 4 is a diagram illustrating a state in which 3D image data configured in the data formatter 330 is displayed in each frame of the display unit 400 having the simultaneous light emission driving method. In FIG. 4, the x-axis represents time and the y-axis represents the vertical position of the display unit 400. The display unit 400 has an output frequency of 240 Hz and is driven by a simultaneous light emission driving method. Therefore, the light emission period and the non-light emission period are included in one frame period (4.15 ms).

In the single viewer 3D mode according to another embodiment of the present invention, the 3D image data is configured to have the same arrangement as (L1-R1-L1-R1-L2-R2-L2-R2) And the shutter glasses 500 are operated with the left and right shutter opening / closing cycles of 240 Hz.

Further, the simultaneous emission timing of the display unit 400 is adjusted to reduce the time between the left eye image data L1 and the right eye image data R1 to 4.15 ms or less. Since the time between the left eye image data L1 and the right eye image data R1 is reduced to 4.15 ms or less, flicker phenomenon can be prevented from occurring.

In other words, the timing controller 310 determines the stereoscopic images L2 and R2 that are different from the light emission period of the one stereoscopic image than the interval between the light emission periods of the left and right eye image data that constitute one stereoscopic image L1 and R1, The interval between the light emission periods of the light emitting elements can be adjusted to be larger.

The emission timing of the display unit 400 can be determined by a signal responsible for light emission. Accordingly, the time between the emission of light by the left eye image data L1 and the emission of light by the right eye image data R1 can be reduced to 4.15 ms or less by adjusting the timing of the emission signal.

In addition, by repeating the same image data in successive frames as in (L1-R1) and (L1-R1), problems such as crosstalk and luminance drop can be solved.

5 is a timing diagram illustrating a method of configuring 3D image data in a dual viewer 3D mode according to the prior art. 5 is a diagram illustrating a state in which 3D image data configured in the dual viewer 3D mode in the data formatter 330 is displayed in each frame of the display unit 400 having the simultaneous light emission driving method. 5, the x-axis represents time, and the axis represents the vertical position of the display unit 400. In Fig. The display unit 400 has an output frequency of 240 Hz and is driven by a simultaneous light emission driving method. Therefore, the light emission period and the non-light emission period are included in one frame period (4.15 ms).

In order to realize the dual viewer (A, B) 3D stereoscopic image, the data formatter 330 stores the left eye image data AL1, AL2 ... of the A and the right eye image data AR1, AR2, BL2, ..., and right eye image data BR1, BR2, ... are arranged alternately to construct 3D image data, and the configured 3D image data is output to the display unit 400. [ The 3D glasses image data are sequentially displayed on the display unit 400 having an output frequency of 240 Hz and the shutter glasses 510 and 520 of the viewers A and B are displayed in the same manner as the 3D image data displayed on the display unit 400 .

For example, 3D image data is arranged in the same arrangement as (AL1-BL1-AR1-BR1-AL2-BL2-AR2-BR2) and sequentially displayed on the display unit 400 having an output frequency of 240 Hz, The shutter glasses 510 and 520 of the cameras A and B operate in the same manner as the 3D image data displayed on the display unit 400. [

That is, when the left eye image data AL1 of A is displayed, only the left eye shutter of the shutter glasses 510 of A is opened, and both the right eye shutter of A and the shutter glasses 520 of B are closed. When the left eye image data BL1 of B is displayed, only the left eye shutter of the shutter glasses 520 of B is opened, and both the right eye shutter of B and the shutter glasses 510 of A are closed.

Similarly, when the right-eye image data AR1 of A is displayed, only the right-eye shutter of the shutter glasses 510 of A is opened, and both the left-eye shutter of A and the shutter glasses 520 of B are closed. When the right eye image data BR1 of B is displayed, only the right eye shutter of the shutter glasses 520 of B is opened, and both the left eye shutter of B and the shutter glasses 510 of A are closed.

In the 3D image data structure for implementing the conventional dual viewer (A, B) 3D stereoscopic image, the time from when A memorizes the left eye image data AL1 to when the right eye image data AR1 is newly input Is 8.3 ms. Similarly, in the case of B, the time until the left eye image data BL1 is stored and the right eye image data BR1 is newly input is 8.3 ms. Therefore, the 3D stereoscopic image viewed by the viewers A and B is operated at 120 Hz.

Accordingly, in the present invention, the output order of the 3D image data configured in the data formatter 330 is changed or the timing of simultaneous emission of the display unit driven by the simultaneous driving method is adjusted, so that the time between the left eye image data and the right eye image data . As described above, by reducing the interval between the left eye image data and the right eye image data viewed by each viewer, it is possible to reduce the occurrence of flicker and depth distortion.

6 is a timing diagram illustrating a method of configuring 3D image data in a dual viewer 3D mode according to an embodiment of the present invention. 6 is a diagram illustrating a state in which 3D image data configured in the data formatter is displayed in each frame of the display unit 400 having the simultaneous light emission driving method. 6, the x-axis represents time, and the axis represents the vertical position of the display unit 400. In Fig. The display unit 400 has an output frequency of 240 Hz and is driven by a simultaneous light emission driving method. Therefore, the light emission period and the non-light emission period are included in one frame period (4.15 ms).

The data formatter 330 in the 3D mode of the dual viewers A and B according to an embodiment of the present invention includes the left eye image data AL1, AL2 ... and the right eye image data AR1, AR2, The 3D image data is configured so that the image data BL1, BL2 ... and the right eye image data BR1, BR2 ... have the same arrangement as (AL1-AR1-BL1-BR1-AL2-AR2-BL2-BR2) And outputs the 3D image data to the display unit 400. The 3D glasses image data are sequentially displayed on the display unit 400 having an output frequency of 240 Hz and the shutter glasses 510 and 520 of the viewers A and B are displayed in the same manner as the 3D image data displayed on the display unit 400 .

In the case of the conventional dual viewer 3D image data array (AL1-BL1-AR1-BR1-AL2-BL2-AR2-BR2), the time between the left eye image data and the right eye image data viewed by the viewers A and B is 8.3 ms In the case of the dual viewer 3D image data arrays AL1-AR1-BL1-BR1-AL2-AR2-BL2-BR2 according to an embodiment of the present invention, the left eye image data viewed by the viewers A and B, It is possible to prevent the flicker phenomenon from occurring because the time between video data is reduced to 4.15 ms.

7 is a timing diagram illustrating a method of configuring 3D image data in a dual viewer 3D mode according to another embodiment of the present invention. 7 is a diagram illustrating a state in which 3D image data configured in the data formatter 330 is displayed in each frame of the display unit 400 having the simultaneous light emission driving method. In FIG. 7, the x-axis represents time and the y-axis represents the vertical position of the display unit 400. The display unit 400 has an output frequency of 240 Hz and is driven by a simultaneous light emission driving method. Therefore, the light emission period and the non-light emission period are included in one frame period (4.15 ms).

In the dual viewer 3D mode according to another embodiment of the present invention, 3D image data is configured to have the same arrangement as (AL1-AR1-BL1-BR1-AL2-AR2-BL2-BR2) And the shutter glasses 510 and 520 of the viewers A and B operate in the same manner as the image data output to the display unit 400. [

In addition, the time between the left eye image data AL1 of A and the right eye image data AR1 of A is reduced to 4.15 ms or less by adjusting the simultaneous emission timing of the display unit 400. [ Similarly, the time between the left eye image data BL1 of B and the right eye image data BR1 of B is reduced to 4.15 ms or less.

In other words, the timing controller 310 adjusts the interval between the light emission period of the one stereoscopic image and the light emission period of the other stereoscopic image to be larger than the interval between the light emission periods of the left eye and right eye image data composing one stereoscopic image do. In particular, the timing controller 310 can control the interval between the light emission periods of the image data recognized by each viewer to be larger than the interval between the light emission periods of the left and right eye image data recognized by one viewer.

The emission timing of the display unit 400 can be determined by a signal responsible for light emission. Therefore, by adjusting the timing of the emission signal, the time between the period in which the left eye image data AL1 of A is emitted and the time period in which the right eye image data AR1 of A is emitted can be reduced to 4.15 ms or less. Similarly, the timing between the emission of the left eye image data BL1 of B and the emission of the right eye image data BR1 of B can be reduced to 4.15 ms or less by adjusting the timing of the emission signal.

That is, since the time between the left eye image data and the right eye image data of each of the viewers A and B is reduced to 4.15 ms or less, flicker phenomenon can be prevented from occurring.

In addition, since the whole frame period is the same, the time between the left and right eye image data of A is shortened and the time between the left and right eye image data of B is shortened, resulting in an increase in the interval between the image data of A and the image data of B .

That is, since the time between the video data AL1 and AR1 of A and the video data BL1 and BR1 of B is increased to 4.15 ms or more, the crosstalk generated between the video data of A and the video data of B, The problem can be solved.

8 is a timing diagram illustrating a method of configuring image data in the quad viewer 2D mode according to an embodiment of the present invention. 8 is a diagram illustrating a state in which 2D image data of the quad viewers A, B, C, and D are displayed in respective frames of the display unit 400 having the simultaneous light emission driving scheme. 8, the x-axis represents time, and the axis represents the vertical position of the display unit 400. In Fig. The display unit 400 has an output frequency of 240 Hz and is driven by a simultaneous light emission driving method. Therefore, the light emission period and the non-light emission period are included in one frame period (4.15 ms).

In order to realize a 2D image, quad viewers A, B, C, and D are used to construct 2D image data by alternately arranging image data of A, image data of B, image data of C, and image data of D, And outputs the image data to the display unit 400. The 2D image data is sequentially displayed on the display unit 400 having an output frequency of 240 Hz and the shutter glasses 510, 520, 530 and 540 of the respective viewers operate in the same manner as the image data output to the display unit 400 .

For example, the 2D image data is arranged in the same arrangement as (ABCDABCD), sequentially displayed on the display unit 400 having an output frequency of 240 Hz, and the shutter glasses 510, 520, 530, (400).

That is, when the image data of A is outputted, only the shutter glasses 510 of A are opened in the left and right, and the remaining shutter glasses 520, 530 and 540 of B, C and D are closed. When B image data is output, only the shutter glasses 520 of B are opened in the left and right directions, and the remaining shutter glasses 510, 530 and 540 of A, C and D are closed. When C image data is output, only the shutter glasses 530 of C are opened in the left and right directions, and the remaining shutter glasses 510, 520, and 540 of the A, B, and D are closed. When D image data is output, both the left and right shutter glasses 540 are opened, and all the remaining shutter glasses 510, 520, and 543 of the A, B, and C are closed.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You can understand that you can. It is therefore to be understood that the embodiments described above are illustrative in all aspects and not restrictive.

100: display device
200: Signal processor
300:
400:
500: Shutter glasses

Claims (12)

A signal processing unit for generating left eye and right eye image data from the input image signal;
A frame rate conversion unit for generating a plurality of left eye and right eye image data corresponding to an output frequency from the image data;
A data formatter for alternately arranging a plurality of left eye and right eye image data generated by the frame rate conversion unit; And
And a display unit sequentially displaying a plurality of image data configured by the data formatter. The display device of claim 1, wherein the display unit is driven by a simultaneous light emission driving method including a light emission period and a non-light emission period for one frame period. 3. The display device according to claim 2, further comprising a timing control section for controlling emission timing of the light emission period. 4. The display device according to claim 3, wherein the timing controller adjusts a time between a light emitting period in which light is emitted by the left eye image data and a light emitting period in which light is emitted by the right eye image data. 5. The stereoscopic image display apparatus according to claim 4, wherein the timing controller is configured to set the interval between the light emission period of the one stereoscopic image and the light emission period of the other stereoscopic image to be larger than the interval between the light emission periods of the left eye and right eye image data composing one stereoscopic image A display device to control. The display device according to claim 4, wherein the timing controller adjusts an interval between light emission periods of image data recognized by each viewer to be larger than an interval between light emission periods of left and right eye image data recognized by one viewer. The display device according to claim 1, further comprising shutter glasses that are opened and closed corresponding to left and right eye image data sequentially displayed on the display unit. The display device according to claim 7, wherein the shutter glasses include a mode selection unit capable of selecting a 3D mode, a 2D mode, a single mode, a dual mode, and a quad mode. A first step of receiving a video signal;
A second step of generating left eye and right eye image data using the received video signal;
A third step of generating a plurality of left eye and right eye image data corresponding to an output frequency from the image data;
A fourth step of alternately arranging the plurality of left eye and right eye image data into an output format; And
And sequentially displaying the image data in the output format on the display unit. 10. The method of claim 9, wherein the fifth step comprises adjusting a time period between a light emitting period for emitting light by the left eye image data and a light emitting period for emitting light by the right eye image data. 10. The method of claim 9, wherein the fifth step further comprises the step of calculating a distance between the light emission period of the one stereoscopic image and the light emission period of the other stereoscopic image, rather than an interval between light emission periods of the left eye and right eye image data, And controlling the driving of the display device. 10. The method according to claim 9, wherein the fifth step includes a step of adjusting an interval between light emission periods of image data recognized by each viewer to be larger than an interval between light emission periods of left and right eye image data recognized by one viewer And a driving method of the display device.

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